However, there may be circumstances in which noise impacts arise which need to be alleviated further. For those who may be affected by this, TfL will have a Noise and Vibration Policy in place. This will cover aspects such as potential mitigation measures (such as secondary glazing) or in certain circumstances an offer of re-housing on a temporary basis where noise thresholds are likely to be reached for extended periods. TfL is also developing a Hardship Policy where owners of eligible properties who have a compelling reason to sell their property and are unable to do so owing to the NLE, could have their property purchased by TfL. These policies will be published on the NLE website as soon as they are available.6. What’s nextFeedback from this consultation will be considered before an application is submitted to Government in spring 2013 for permission to build and operate the extension.We will also write to the owners and occupiers of properties directly affected by the construction of the NLE. Subject to permission being granted, a contractor would be appointed to carry out the works.
We and our contractors will engage with local residents and businesses throughout the proposed building works. This could include establishing community liaison groups, providing newsletter updates and holding drop-in and feedback sessions. We’d welcome any other ideas from local residents on how they would like to be kept informed during this period.Work to build the extension and new stations could start by 2015.7. Have your sayThis consultation gives you the opportunity to comment before we submit our application for the Transport and Works Act Order needed to start construction. Visit
or complete the feedback form. Alternatively, if you wish to receive a paper version of the feedback form please call 0843 222 1234 or email and we can arrange for one to be posted to you. The consultation will close at midnight on 30 December 2012 (extended from 16 December 2012). 8.
Further information
More information about key sites, a consultation feedback form and other details about the scheme can be found at To receive this document in large print, audio or another language, please call 0800 298 3009.
Transport for London
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KeyNorthern lineProposed Northern line extension
Construction site perimeter -
Construction site perimeter during grout treatmentShaft
Northern line extensionFactsheet 1: Temporary shaft site at Radcot Street
1. Background To build the Northern line extension (NLE) the new tunnels would beconnected to the existing ones along the line, which are approximately 300m from Kennington station. To build these connections it is anticipated that as the tunnel work is progressing there will be a need for ground treatment works to stabilise the ground, and reduce ground movements and the risk of settlement damage on adjacent properties. Our current approach is to carry out these works from two temporary grout shafts (see factsheet 7 Temporary shafts and ground treatment works and factsheet 9: Alternative construction approach). We recognise this could impact on local residents and we continue to investigate how these impactsmay be minimised. To ensure the ground treatment works are most effective, the proposed temporary shafts must be located at sites as close as possible to junctions where the new tunnels would join the existing Tube lines.Radcot Street and Harmsworth Street are the two sites along the proposed route of the NLE where a temporary grout shaft would be best located. These sites were chosen following consultation in 2011 and further technical work to assess
engineering and building options,
disruption for each of the sites. The proposed sites have been selected and endorsed in consultation with Southwark and Lambeth Councils. 2. LocationThe map illustrates the location of the proposed temporary shaft at Radcot Street and the likely construction site required to carry out the works. 3. Construction impacts
between two and three months and a construction site would be required of around 30-35 metres long by six metres wide for machinery, storage and general works use. The site would be screened by a protective hoarding. After this phase, the size of the construction site would be reduced to around 15-20 metres long by six metres wide for the duration of the works (approximately 18 months) while ground treatment is carried out. Throughout the works, Radcot Street
access would be retained.
excavate the shaft, it’s anticipated there may be up to 10 lorry loads a day. For the rest of the period (approximately 18 months) and while ground treatment works are
site would be minimal (perhaps between one and two vehicles a day).
still under way, however early indications suggest that up to 15 car parking spaces could be temporarily suspended at Radcot Street. There may also be the occasional requirement for additional spaces on Ravensdon Street to allow access for the larger vehicles required to deliver one-off pieces of engineering equipment. We would
alternative parking options. A full environmental statement is being prepared which will include detailed analysis of the temporary impacts during construction including noise and air pollution,
trees and other disruption to local residents. We will minimise these impacts as far as practicable by working closely with the local authority and residents. We will be required to adhere to a strict code of construction practice which will be agreed with the local authorities and include provisions on construction noise, vibration, dust, dirt on highways, working hours and noise limits.The detail of the code has yet to be
are likely to be between 08:00 and 18:00 on weekdays, and between
08:00 and 13:00 on Saturdays.Working at other times would be by exception, but this might include working when the Tube is not running when it is absolutely necessary to do so. 4. Permanent impactsOn completion of works, the site would be restored to its original state. There would be no permanent impacts.5. Compensation, blight
and hardship Owners of land directly affected by construction or operation of the NLE may be entitled to claim compensation. Entitlement to compensation is governed by legislation known as the Compensation Code. In some cases, landowners whose property is directly blighted by the prospect of the NLE may be entitled to require their property to be acquired from them early. Further information both on the Code and on blight is available at www.communities.gov.uk The construction of the NLE will cause noise and vibration in some areas. This will be controlled as far as possible by implementing measures to limit noise and vibration on the construction site itself. Levels will be regulated through the code of construction practice agreed with the relevant local authorities.
